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Hugo Palmer (left) and his father Mark (right) have launched a Kickstarter campaign to bring their e-bike invention into mass production

The product, which costs between £399 and £499, is designed to make hilly commutes and long rides easier.

With two battery sizes available, the 100 watt-hours and the 209 watt-hours, the smaller-sized battery will allow users to travel up to 11 miles while the larger-sized battery will allow users to complete journeys of up to 23 miles.

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Hugo explained: “It’s for people who like their bike but want an e-bike too. It’s easy to use and feels like you have a tailwind at all times.

“Lots of people would like to cycle to work but are reluctant because it’s just a bit strenuous, especially if you live in a hilly city. So Revos provides a way of enjoying a cycling commute.”

Mark working on the product at the Revolution Works workshop in Filwood Green

Revos consists of three parts - the geared drive unit that attaches to the bike frame and drives the rear wheel round, the pedal assist sensor that controls the drive unit in response to the rider’s pedalling and the battery which fixes to the frame via the bottle holder.

The gadget takes less than 10 minutes to attach to a bike, and can be removed and re-attached as required.